Intel Arc B580 vs Intel Arc Graphics 1 Xe Mobile Comparison

Head-to-Head Benchmarks

The Intel Arc B580 and the Intel Arc Graphics 1 Xe Mobile occupy entirely different performance tiers, and the recorded data confirms this without ambiguity. The Arc B580 has a substantial benchmark suite, while the mobile part has no recorded benchmark scores in the database at this time. This absence itself is a decisive data point: the Arc B580 delivers a measured average benchmark score of 23021, whereas the mobile GPU's average benchmark score is 0. The desktop card's percentile standing among all GPUs is 68, compared to the mobile chip's 50, indicating that the Arc B580 sits above the median of all tracked graphics hardware while the mobile solution does not.

In the specific tests where the Arc B580 has results, the scores show consistent capability across modern and legacy APIs. Its 3DMark Steel Nomad DX12 score is 3068, a strong result for a current-generation DirectX 12 workload. The Geekbench OpenCL score reaches 92821, and the Vulkan score is 109672, showing that compute and cross-platform graphics workloads both scale well. The Passmark suite shows a G3D score of 15748, a GPU compute score of 7729, and a G2D score of 709. The DirectX 11 result of 128 is the highest among the Passmark API-specific tests, followed by DirectX 9 at 183, while DirectX 10 and DirectX 12 both register 76. These figures indicate that the Arc B580 handles a broad range of API generations, with particular strength in the older DirectX 9 and DirectX 11 paths.

Relative to its nearest rivals in the database, the Arc B580 is essentially tied with several established GPUs. It sits 0.2% behind the AMD Radeon RX 580 2048SP, whose average score is 23061, and 0.6% ahead of the NVIDIA GeForce RTX 2080, which posts 22895. The gap to the NVIDIA GeForce RTX 3080 is 0.7% in that card's favor, with a score of 23172, and the NVIDIA P106-100 leads by 1% with 23249. These deltas are all within a single percentage point, meaning the Arc B580's aggregate performance is statistically level with a range of cards from prior generations, some of which were flagship-tier at their release. The mobile GPU has no nearest rivals listed, underscoring its lack of comparable benchmark presence.

Architecture Differences

The architectural split between these two Intel GPUs is stark. The Arc B580 uses the BMG-G21 chip built on the Xe2-HPG architecture, fabricated on a 5 nm process at TSMC. It belongs to the Battlemage generation, specifically the Arc 5 tier. The mobile part, by contrast, uses the Wildcat Lake chip with the Xe3-LPG architecture, built on a 3 nm process at Intel's own foundry, and belongs to the Arc Graphics-M generation. The transistor counts and die sizes differ enormously, though the database only records these for the desktop card: 19,600 million transistors on a 272 mm² die, yielding a transistor density of 72.1M per mm². The mobile chip's transistor count and die size are listed as unknown.

The compute resources reveal the scale of the difference. The Arc B580 has 2560 shading units, 160 texture mapping units, and 80 raster operation units. The mobile GPU has 128 shading units, 8 TMUs, and 4 ROPs. Ray tracing hardware follows the same pattern: the desktop card carries 20 RT cores, while the mobile chip has just 1. Neither part lists tensor cores. The clock behavior also diverges. The Arc B580 runs at a fixed 2670 MHz for both base and boost, while the mobile GPU has a 300 MHz base clock that boosts to 2300 MHz. The desktop card's memory clock is 2375 MHz, translating to 19 Gbps effective, whereas the mobile part uses system shared memory with no dedicated clock.

The memory subsystem is another major differentiator. The Arc B580 has 12 GB of GDDR6 on a 192-bit bus, delivering 456.0 GB/s of bandwidth. The mobile GPU's memory is listed as "System Shared" for size, type, bus width, and bandwidth, with bandwidth described as "System Dependent". This means the mobile part relies entirely on the host system's memory controller and DRAM, creating variable performance that depends on the laptop's configuration. The desktop card's fixed, dedicated memory offers predictable and much higher bandwidth. Pixel rate and texture rate follow suit: the Arc B580 outputs 213.6 GPixel/s and 427.2 GTexel/s, while the mobile GPU manages 9.200 GPixel/s and 18.40 GTexel/s. Floating-point throughput is 13.67 TFLOPS for the desktop card versus 588.8 GFLOPS for the mobile chip, a difference of more than an order of magnitude.

Both GPUs support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This means feature-level parity for software compatibility, even though the hardware capability behind those APIs is vastly different. The power and physical characteristics also diverge completely. The Arc B580 has a 190 W TDP, requires a dual-slot cooler, uses a single 8-pin power connector, and needs a 450 W suggested power supply. The mobile GPU has a 25 W TDP, is an integrated graphics processor (IGP) with no power connectors, no suggested PSU, and is a portable device dependent solution. The desktop card measures 272 mm in length, 115 mm in height, and 45 mm in width, while the mobile part has no recorded dimensions. The bus interface differs as well: the Arc B580 uses PCIe 4.0 x8, while the mobile GPU uses an integrated graphics path with no external bus. Display outputs for the desktop card are 1x HDMI 2.1a and 3x DisplayPort 2.1, whereas the mobile part's outputs are portable device dependent.

FAQ

Q: How much does the Intel Arc B580 outperform the Intel Arc Graphics 1 Xe Mobile in raw compute?

A: The Arc B580 delivers 13.67 TFLOPS of FP32 performance, while the mobile GPU provides 588.8 GFLOPS. This places the desktop card roughly 23 times higher in raw shader throughput.

Q: What memory configuration does each GPU use?

A: The Arc B580 has 12 GB of dedicated GDDR6 memory on a 192-bit bus with 456.0 GB/s bandwidth. The Arc Graphics 1 Xe Mobile uses system shared memory, with its bandwidth dependent on the host system.

Q: Are both GPUs compatible with the same graphics APIs?

A: Yes. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the power draw difference between the two?

A: The Arc B580 has a 190 W TDP and requires a 450 W suggested power supply. The mobile GPU has a 25 W TDP and requires no external power connectors.

Q: Does the mobile GPU have any benchmark scores in the database?

A: No. The Arc Graphics 1 Xe Mobile has no recorded benchmark scores, while the Arc B580 has an average benchmark score of 23021.

Q: What process nodes are used for each chip?

A: The Arc B580 uses a 5 nm process at TSMC, while the Arc Graphics 1 Xe Mobile uses a 3 nm process at Intel.

Specification Differences

The two GPUs differ on nearly every recorded specification. The process node is 5 nm for the Arc B580 versus 3 nm for the mobile part. The desktop chip is built on Xe2-HPG architecture, while the mobile chip uses Xe3-LPG. The transistor count is 19,600 million for the Arc B580 and unknown for the mobile GPU. Die size is 272 mm² versus unknown. The desktop card has 2560 shading units, 160 TMUs, 80 ROPs, and 20 RT cores. The mobile GPU has 128 shading units, 8 TMUs, 4 ROPs, and 1 RT core. Base clocks are 2670 MHz versus 300 MHz, and boost clocks are 2670 MHz versus 2300 MHz.

Memory size is 12 GB GDDR6 versus system shared, bus width is 192-bit versus system shared, and bandwidth is 456.0 GB/s versus system dependent. Pixel rate is 213.6 GPixel/s versus 9.200 GPixel/s. Texture rate is 427.2 GTexel/s versus 18.40 GTexel/s. FP32 throughput is 13.67 TFLOPS versus 588.8 GFLOPS. FP16 throughput is 27.34 TFLOPS versus 1,177.6 GFLOPS. TDP is 190 W versus 25 W. Slot width is dual-slot versus IGP. Power connectors are 1x 8-pin versus none. The suggested PSU is 450 W versus none. The bus interface is PCIe 4.0 x8 versus IGP. Display outputs are 1x HDMI 2.1a and 3x DisplayPort 2.1 versus portable device dependent. Dimensions are 272 mm by 115 mm by 45 mm for the desktop card, versus no recorded dimensions for the mobile part. Release dates are 2024-12-12 for the Arc B580 and 2026-04-15 for the mobile GPU. The desktop card has a launch MSRP of 249 USD, while the mobile part has no MSRP recorded. The predecessor for the Arc B580 is Alchemist, and for the mobile GPU it is HD Graphics-M.

Where Each One Wins

The Arc B580 wins in every measured category. Its dedicated memory configuration with 12 GB of GDDR6 and 456.0 GB/s bandwidth makes it suitable for high-resolution gaming and GPU-intensive workloads where memory capacity and speed are critical. The 20 RT cores provide hardware ray tracing capability that scales with its 190 W power envelope. The desktop card's 68th percentile standing among all GPUs, combined with benchmark scores that match the AMD Radeon RX 580 2048SP, NVIDIA GeForce RTX 2080, and NVIDIA GeForce RTX 3080 within a single percentage point, places it in a performance class that handles demanding applications. Its active production status and full API support for DirectX 12 Ultimate mean it can run current and near-future titles with feature-level parity.

The Arc Graphics 1 Xe Mobile wins on efficiency and integration. Its 25 W TDP is a fraction of the desktop card's 190 W, making it appropriate for thin-and-light laptops where power draw and heat output are constrained. The 3 nm Intel process node gives it a manufacturing advantage in density, and its system shared memory approach means no dedicated VRAM cost. The 1 RT core and 128 shading units are sufficient for basic graphics acceleration, media playback, and light productivity workloads. Its 50th percentile standing indicates it sits exactly at the median of all GPUs, which for an integrated solution is a meaningful position. The mobile part has no power connectors and no suggested PSU, so it can drop into systems without any power delivery changes.

The Verdict

The data divides these two GPUs into separate markets with minimal overlap. The Intel Arc B580 is a dedicated desktop graphics card built for performance. Its 190 W TDP, 12 GB GDDR6 memory, 2560 shading units, and 20 RT cores make it a full-fledged discrete GPU. Its benchmark results, which match or exceed several NVIDIA and AMD cards from previous generations, confirm that it delivers competitive rasterization and compute performance. The 249 USD launch MSRP positions it in the mainstream desktop segment. Users who need high frame rates, hardware ray tracing, and substantial VRAM should choose the Arc B580.

The Intel Arc Graphics 1 Xe Mobile is an integrated GPU designed for power efficiency. Its 25 W TDP, 128 shading units, and 1 RT core are appropriate for basic graphics tasks, but its lack of any recorded benchmark scores means its real-world performance is unverified in the database. Its system shared memory architecture makes it dependent on host system memory speed, which is a variable factor. Users who need a portable device with long battery life and modest graphics demands should select the mobile part, but only for light workloads. The Arc B580 is the clear choice for any scenario where graphical performance matters, while the mobile GPU is a functional but unproven option for basic computing. The 3 nm process and Xe3-LPG architecture suggest efficiency is the mobile part's priority, but efficiency without measurable performance data leaves its practical value uncertain.